Automobile radiator



March 13, 192s.

' 1,662,064 H. JAFFE AUTOMOBILE RADIATOR A Filed Sept. 21, 19252`Sheets-Sheet-1 l @@QQQQE i@ XE -arry' Jaffe March 13, 1928.

H. JAFFE AUTOMOBILE RADIATOR Filed Sept. 21, 1925 2 Sheets-Sheet 2 HarryJaffa diffs/7.

Patented Mar. 13, 19728.

UNITED STATES 1,662,064 PATENToFi-ica HARRY JANE, oFnETnoIT, MICHIGAN,Assrenon To KALMAN STEEL COMPANY, on

CHICAGO, ILLIlvois,` A conPonA'rIoN or DELAWARE.

AUTOMOBILE RADIATOR.

Application med september 21, 1925. serial No. 57,687.

s f My invention relates to improvements in automobile radiators and haslspecial reference to cores, for such radiators, which cores havevertical water passages alternating with air passages. I

The object or" my invention is to provide a radiator core which shall-beconstructed of vertically extending strips of thin sheet metal whichextend from the top to the bottom lthereof and which strips are formedto provide, between each two strips, forming a pair, a plurality ofvertical water passages,y and between adJacent pairsa vertically ex-ytending air passage opening through the front and baclr of the core andspacer parts formed out ci' said strips for spacing the pairstransversely ot the core to form the air passages. t

A furtherobj ect of my invention is to provide a radiator core whichshall simulate the well known liin and tube type of core the coreconsisting oi vertically extending strips and the tubes being formed bysuch strips. v i V A further object vof my invention is to provide aradiator core made up of a plurality of vertically extending elementseach made of thin sheet vmetal only and each havf ing a plurality Loflongitudinally extending tubular water passages and integral outwardly'extending spacer formations adapted to contact with similar 'formationson adjacent elements for `spacing the elements apart. Y

A further object ot my invention is to provide a core ci' the iin andtub-c tyjie made ot vertically extending tliinsheet ine-.tal strips andwhichshall have vertically extending water passages alternating with airpassages the water passages having single thickness walls adapted to becontacted by water on the inside and air on the outside.

Afurther object lof my invention is to provide a core of the lin andtube type which shall have heat radiating fins formed integrally withthe walls of the tubes whereby theV heat radiating capacity is greatlyincreased. L

A further object of my invention is to provide a core of the tin andtube type which shall have tubes formed of metallic tubular partsextending from thetop to the bottom of the core and heat radiatingiinsformed integrally with said tubular parts.

A further objectief `my invention is to provide a core ol the tin andtubetype which shall be made of applurality ot identically formed stripsextending from top to bottom` of the core and formed to provide apluralityvof tubularr` vertical water passagesv be-v tween each twostrips forming a pair-and to provide partly severed vand bentv outspacer projections adapted to space the pairs apart to form airpassages.

A further object ot' my inventionis to provide a radiator simulating the`honey-comb type and yhaving rows of vertical,` tubular watertpassagesalternatingwith air passages and made up of vertically extending thinsheet metal strips. I

further object of vmy `invention is to provide a core ot' the honey-combtype which shall have tubes extending vertically through alternatevertical rows of the radiator air passages and heat radiating tinsintegral with the walls of the tubes extending into the air passagesofthe other vertical rows.

gli` further object of ymy invention is to provide an eleinent'for lusein constructing 'radiator cores which elementshall be made of sheetmetal and shall provide a plurality ot' vertical water passages and aplurality of part-ly severed and outwardly formed heat Y radiating finsor projections. l A further `object, of my invention is to provide asheet metal element for use in forming a core7 the sheet metal formed toprovide tubular water` passages having single thickness walls andyspacerfparts integrally connected v to said walls.- f A further objectof my invention is to provide a sheet metal element for use in forming acore, the sheet metalformed to provideI tubular water` 'passages .havingsingle thicknessl walls, and partly severed parts bent outwardly to"form element spacers which serve tol radiate heat. 7

Further objects, utilities and beneiits willy appear :trom the followingdescription and accompanying drawings in .whi'chz-q ,Fig -1, isafragmentary front elevation of an automobile radiatorembodying myinvention; l

Fig. 2, is afragmentary vertical section on the line 22 of Fig. 1; 1 yFigs. 3 and 4, are fragmentary vertical sections on the lines 3-3 and4.--4 respectively of Fig. 2; i v v struction'.

An automobile radiator of thekind to which my invention relatescomprises a core l which is interposed between a top tank 2 and a bottomtank, not shown, and serves to "cool the water as thesame flows downfrom the upper tank to thel lower tank air flowingl through the corefrom front to back, to carry away the heat.-y

The fin and tube type of radiator core to which ina sense, my`inventionrelates is ordinarily constructed of vertically extending tubes sealedattheirendsinto` the top and bottom tanks and through which the waterflows down as it is cooled, the tubes being projected through aplurality of horizontally extending lin plates or strips which assist indissipating the heat.

-It goes without saying that for effective and 'eicient radiation oflthe heat from the waterin the tubes the tubes and the fin plates mustbe metallically connected where the tubes pass throughthe plates. VThisseemsfa diiicult point to accomplish at a cost"whichis not prohibitiveand many if not-all such radiators in use lack efficiency on account oflooseness at these points;

'lheordinary honey-'comb corewhich the radiator of my inventionsimulates in appearance consists either of vertical strips combined withvertical tubes or of vertical strips f' forming narrow elongated usuallyzig-zag passages `alternating with spacer strips.

As distinguished from such forms of Acores the core ofmy inventionconsists ofa plurality of vertically extending strips 3, which areallalike and out ofwhich are formed both the water tubes and the spacersfor Y holdingr the watertube elementsapart and formingthe' interveningair spaces.

Y` As `'shownin the drawings each strip 3 which is `made of very thinsheet metal is of awidth ytoextendfrom front to back of the core'.V'Itisllbentlover at its ends to form right angle lateral flanges 4adapted tocooperate =with similar ilangeso the other strips to :Form aflat top rand a fiatbottom :for the`core, `and turned j back flanges 5adapted to contact with flanges of `adjacent stripsto form suitableconnection between outer surfaces 15.

the purpose best and best avoiding possibili-v ties of clogging theradiator with sediment. The halt' -cylindrical tubular parts ordepressions are arranged symmetrically as to the lateral edges of thestrip so that all of the strips can be formed upon one die mechanism andwhen arranged face to face the half cylindrical depressions of one stripwill accurately register with the like depressions in the other strip toform the water pas sages 7.

At cach side of eachdepression 6 and runningr from end to end of thestrip isa narrow fiat surface 8 which lies in the orig inal plaine ofthe strip and the similar fiat surfaces of two strips when arranged faceto face to form the water passages 7 will contact with each otherthroughout their length and breadth thus providing'joints 9 adapted tomake the passages watertight from end to end when these surfaces areproperly soldered together as shown in Figs. 5 and 6.

lVhen two strips are thus arranged face to face they form what may betermed a radiator element providing a plurality of verticall waterpassages extending from end to end thereof. Such pairs of strips joinedto forni elements having water `passages and having the solderedconnecting fianges might be arranged to forin a core but it would lackrigidity unless braced trans vcrsely Aand it would lack ^eliicienc \f asthere would not be sufficient radiating surface.

To complete the core I form parts of each sheet outwardly to providespacer projections or parts l0 having flat contacting surfaces 11 'attheir outer ends parallel with the plane of the stri and adapted tocontact with similar sur aces on adjacent strips for spacing theelements apart and when joined by solder for holding adjacent elementstogether. These projections` are formed up out of the flat parts 12 ofthe strips between the several half cylindrical grooves'and out oftheflat longitudinal edge portions 13 of the sheet I form similarcontacting projections 14 having similar flat The fiat outer surfaces 11and 15 are joined at their ends to the body of the strips by inclinedparts or walls 16 and 17 respectively and the parts are so proportionedand formed that when` the strip is viewed edgewise the flat outer partelio 11 and 15 with their inclined connecting of although their ends areclosed bythe bent over anges 4. o

The spacer parts and 14 also serve most effectively as heat radiatingfins vas they lie directly in the passages 18 through which the airflows to cool the radiator. Furthermore the parts 12 and 13 out of whichthe spacer parts 10 and 14 are formed serve as heat radiating flanges ortins.

The parts 10 and 14 are formed out of the strips by severing them alongthe two .lateral edges of the parts 11 and 16 in the one case and at theinner edges of the parts 15 and 17 inthe'ot-her case as shown at 181 18and 19 respectively along linesvlongitudinal of the strip or in otherwords parallel with the tube formations 6. Between these, slits and theadjacent edges of the tube forma` tions 6 are the iiat contactingsurfaces 8 which serve to seal the water passages along the edgesof thetube formations.

For the purpose yof making the spacer formations more rigid I may form asmall half round rib 20 extending centrally of the parts 11 and 16 andfrom'end lto end of the spacer projection.

For cross connecting adjacent air passages and to better solder thestrips together I form the strips 3 with openings 21 through the flatparts 12 and vertically between the spacer parts 10. These holes notonly allow the air to circulate crosswise between the air passages butassist in soldering the strips together' to form the elements as thesolder can freely enter between the two strips of the element throughthese openings.

Having madeenough of the singley strips I arrange them in pairs face toface to yform the elements with the water passages and arrange enough ofthe elementsside by side to forni the core. Then I tightly clamp theparts together in a suitable clamping frame and immerse the whole in abath of melted solder allowing the solder to flow through all the tubesthus coating them inside as well as to cover every external surface. Bythis means I not only cover every part of external and internal surfacewith solder but I also permanently join the strips to form the elementsand the elements to form thecore. 1

As shown in Fig. 10 I may make the elements of a single strip instead oftwo strips. For this purpose I ltake a strip 22 twice as wide astherdepth of the core from front to back and I form this strip toproduce the tubular and spacer formations of two single strips sideby,side,then kI fold over onehalf of the strip upon the other halfy onthe longitudinal. median line 23 thus bringing the tubular formationsand the spacer formations into'the same relation as heretoforeydescribed except that the spacer formations on the folded edge of theelement are lacking. The lineupon which ythis double wide strip isfolded is coincident with the outer'edges of the adjacentfiat surfaces 8bordering the adjacent water pas- I sage grooves 6.

In producing this form each operation ofthe die mechanism forms a stripfor a complete element and thereby the Vcost is reduced. l c

`It is to be noted that the water4 is in contact with the inner surfaceof the wall of the tube and that the air is incontact with i the outersurface of the same/single thickness wall. Furthermore,E that every heatradiating part of thefcore is not only' metallically connected or joinedto the water carrying part but is integrally formed therewith. Anysoldered or other joint through which heat .must travel in beingdissipated from the water walls is more or less of a hindrance to thefree flow of heat along such path and cuts down the eiiiciency of theradi' ator. By means of my invention I am enabled to` provide a radiator`of absolutely minimum weight and with 100 percent efficiency as thereare no joints soldered or otherwise across which the heat must flow toescape.

As many modifications of my invention will readily suggest themselvestoone skilled inthe art I do notlimit or confine my in# vention to thespecificdetails of construc-r tion and arrangement of parts herein shownand described. i

Iclaim:-`

1. A radiator core'comprising aplurality lof vertically extendingstrips, the body portions of the strips being flat and extendingk insingle thickness from the top to the bottom of the core, thestripshaving longituydinally extending grooves adapted to cooperate to formvertically extendingL water passages in the core7 portions of the stripspartly severed and formed out of the planes passages in the core, eachstrip being equal in widthto the thickness of the core from front toback,fthe grooves in each strip bordered by at portions of the stripkexstrips `to form vertically extending water j o tendingfroin end toend,sucl1` portions of t other similar elements for making a radiatorcore, said element made up of two strips of sheet metal, the bodyportion`of each strip being flat and extending in single thickness fromend toend of the element, eachl strip being formed with longitudinalgrooves adapted to cooperate with the grooves `of a (3o-operating stripto provide continuous water `passages through the element, and portionsof the sheet metal partly Vsevered and formed outwardly to pro'yidemeans for spacing the water ypassages apart when the element is combinedwith other similar elements to make up a core. f

4Q Anelement for use in conjunction with othersimilarf elements formaking a radiator core, said element made up of two strips of sheetmetal, the body portion of each strip being `fiat and extending insingle thickness from end to end of the element,`each strip being'formed with" longitudinal grooves adapted to cooperate with the groovesoit a co-operating 'strip toV provide continuous water f passagesthrough the element, and portions of the sheet metal 'partly severed andformed outwardly to provide meansfor spacing the water passages apartwhen the element is combined with other similar elements vto make yup acore,` the production of said outwardly formed portions `providingopenings extending from side to side ofthe element.

5. An element for use in conjunction `with other similar elements formaking a radiator core, said element made up of twostrips ofsheetmetahthebody portion of each strip being flat and extending insingle thickness from end to end of the element,` cach strip beingformed with longitudinal grooves adapted to provide continuous water passages through vthe element, and portions oi the sheet metal partlysevered and formed outwardly to provide means for spacing the waterpassages apart whenrthe element is combined with other similar elementsto make up a core, the production of` said formed out portions rovidingthe element with o enings exten lng from side to side thereo ,and theelement provided with other openings between the water passages andextending `from side to side of the element.

6. A `radiator core `built up of a plurality of "strip'sjof thin sheetmetal, the body portion of'ea'ch strip being flat and ,extending in asingle thickness from the top to the bottom of the core, each stripbeing provided with longitudinal grooves adapted to cooperate with'similar` grooves in an adjacent strip toform vertical water passages inthe core, portions of the strips being partly severed and formedoutwardly," the formedout portions being adapted to space the waterpassages apart from side to side of the core, the saidrlatportions ofcooperating strips adaptedto be soldered together to seal the waterpassages.

7. A radiator core comprising-in combination a plurality of elementseach clement beingeomposed of two strips of metal, each strip having aplurality of spaced' continuous2r longitudinah' halfround grooves formedtherein, the flat portions of two strips beiner ada Y ted to be broughtinto contact and'soldere to form ay plurality of vertically extendingwater passages, the fiat portions `of the strips intermediate the groovebeing slit-ted, the slitted portions formed laterally outwardly to 'actas spacing means for an adjacent element.` j

In testimonyvwhereof, I have hereunto set inyhand, this 21st day ofJuly, 1924.

HARRY JAFFE.

